/*
* Copyright 2015 Goldman Sachs.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.gs.collections.impl.multimap.bag;
import java.io.Externalizable;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;
import java.io.Serializable;
import com.gs.collections.api.bag.ImmutableBag;
import com.gs.collections.api.bag.MutableBag;
import com.gs.collections.api.block.function.Function;
import com.gs.collections.api.block.function.Function2;
import com.gs.collections.api.block.predicate.Predicate2;
import com.gs.collections.api.map.ImmutableMap;
import com.gs.collections.api.map.MutableMap;
import com.gs.collections.api.multimap.MutableMultimap;
import com.gs.collections.api.multimap.bag.ImmutableBagMultimap;
import com.gs.collections.api.multimap.bag.MutableBagMultimap;
import com.gs.collections.api.tuple.Pair;
import com.gs.collections.impl.block.procedure.checked.CheckedObjectIntProcedure;
import com.gs.collections.impl.block.procedure.checked.CheckedProcedure2;
import com.gs.collections.impl.factory.Bags;
import com.gs.collections.impl.factory.Maps;
import com.gs.collections.impl.multimap.AbstractImmutableMultimap;
import com.gs.collections.impl.utility.Iterate;
/**
* The default ImmutableBagMultimap implementation.
*
* @since 1.0
*/
public final class ImmutableBagMultimapImpl<K, V>
extends AbstractImmutableMultimap<K, V, ImmutableBag<V>>
implements ImmutableBagMultimap<K, V>, Serializable
{
private static final long serialVersionUID = 1L;
public ImmutableBagMultimapImpl(MutableMap<K, ImmutableBag<V>> map)
{
super(map);
}
public ImmutableBagMultimapImpl(ImmutableMap<K, ImmutableBag<V>> map)
{
super(map);
}
@Override
protected ImmutableBag<V> createCollection()
{
return Bags.immutable.empty();
}
public ImmutableBagMultimap<K, V> newEmpty()
{
return new ImmutableBagMultimapImpl<K, V>(Maps.immutable.<K, ImmutableBag<V>>of());
}
public MutableBagMultimap<K, V> toMutable()
{
return new HashBagMultimap<K, V>(this);
}
@Override
public ImmutableBagMultimap<K, V> toImmutable()
{
return this;
}
private Object writeReplace()
{
return new ImmutableBagMultimapSerializationProxy<K, V>(this.map);
}
private static class ImmutableBagMultimapSerializationProxy<K, V>
implements Externalizable
{
private static final long serialVersionUID = 1L;
private ImmutableMap<K, ImmutableBag<V>> map;
private MutableMultimap<K, V> multimap;
@SuppressWarnings("UnusedDeclaration")
public ImmutableBagMultimapSerializationProxy()
{
// For Externalizable use only
}
private ImmutableBagMultimapSerializationProxy(ImmutableMap<K, ImmutableBag<V>> map)
{
this.map = map;
}
protected Object readResolve()
{
return this.multimap.toImmutable();
}
public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException
{
this.multimap = new HashBagMultimap<K, V>();
int keyCount = in.readInt();
for (int i = 0; i < keyCount; i++)
{
K key = (K) in.readObject();
int valuesSize = in.readInt();
MutableBag<V> bag = Bags.mutable.empty();
for (int j = 0; j < valuesSize; j++)
{
V value = (V) in.readObject();
int count = in.readInt();
bag.addOccurrences(value, count);
}
this.multimap.putAll(key, bag);
}
}
public void writeExternal(final ObjectOutput out) throws IOException
{
int keysCount = this.map.size();
out.writeInt(keysCount);
this.map.forEachKeyValue(new CheckedProcedure2<K, ImmutableBag<V>>()
{
public void safeValue(K key, ImmutableBag<V> bag) throws IOException
{
out.writeObject(key);
out.writeInt(bag.sizeDistinct());
bag.forEachWithOccurrences(new CheckedObjectIntProcedure<V>()
{
public void safeValue(V value, int count) throws IOException
{
out.writeObject(value);
out.writeInt(count);
}
});
}
});
}
}
@Override
public ImmutableBagMultimap<K, V> newWith(K key, V value)
{
return (ImmutableBagMultimap<K, V>) super.newWith(key, value);
}
@Override
public ImmutableBagMultimap<K, V> newWithout(Object key, Object value)
{
return (ImmutableBagMultimap<K, V>) super.newWithout(key, value);
}
@Override
public ImmutableBagMultimap<K, V> newWithAll(K key, Iterable<? extends V> values)
{
return (ImmutableBagMultimap<K, V>) super.newWithAll(key, values);
}
@Override
public ImmutableBagMultimap<K, V> newWithoutAll(Object key)
{
return (ImmutableBagMultimap<K, V>) super.newWithoutAll(key);
}
public ImmutableBagMultimap<V, K> flip()
{
return Iterate.flip(this).toImmutable();
}
public ImmutableBagMultimap<K, V> selectKeysValues(Predicate2<? super K, ? super V> predicate)
{
return this.selectKeysValues(predicate, HashBagMultimap.<K, V>newMultimap()).toImmutable();
}
public ImmutableBagMultimap<K, V> rejectKeysValues(Predicate2<? super K, ? super V> predicate)
{
return this.rejectKeysValues(predicate, HashBagMultimap.<K, V>newMultimap()).toImmutable();
}
public ImmutableBagMultimap<K, V> selectKeysMultiValues(Predicate2<? super K, ? super Iterable<V>> predicate)
{
return this.selectKeysMultiValues(predicate, HashBagMultimap.<K, V>newMultimap()).toImmutable();
}
public ImmutableBagMultimap<K, V> rejectKeysMultiValues(Predicate2<? super K, ? super Iterable<V>> predicate)
{
return this.rejectKeysMultiValues(predicate, HashBagMultimap.<K, V>newMultimap()).toImmutable();
}
public <K2, V2> ImmutableBagMultimap<K2, V2> collectKeysValues(Function2<? super K, ? super V, Pair<K2, V2>> function)
{
return this.collectKeysValues(function, HashBagMultimap.<K2, V2>newMultimap()).toImmutable();
}
public <V2> ImmutableBagMultimap<K, V2> collectValues(Function<? super V, ? extends V2> function)
{
return this.collectValues(function, HashBagMultimap.<K, V2>newMultimap()).toImmutable();
}
}